The WHO reported that almost everyone on Earth breathes unhealthy air. Researchers checked 6,000 cities in 117 countries. People in poorer countries breathe the unhealthiest air. Millions of people in these countries die because of air pollution. The WHO said 7 million people would not die if we had cleaner air.
High gas prices and climate change mean we must use fossil fuels less. We must cut air pollution and use cleaner energy. The WHO made some suggestions. It said we should use clean energy for cooking, heating and lighting. We should also make public transport greener, and have roads that cyclists can use safely.